Can anyone explain what would make this comparison fair for them? What does Chris need to do to make this fair?
If the games official launch date is the date it launched, should he have just counted 3 days from then and done the same for hogwarts and diablo?
Take one uniform tracking period -- it could be 3 days, 7 days, 11 days, or whatever -- then measure every game in that period.
Ideally, single-platform games and multiplatform games should also be highlighted in separate charts/tables, but I understand that could be difficult. But the tracking period / number of days must be uniform for an accurate analysis.